FRED W. NELSON, JR. <br/><br/>
TRACE ELEMENT ANALYSIS OF OBSIDIAN ARTIFACTS 

 - S.E. 
 - S.L. Sin Pais  S.E.  1986 
<br/><br/><label>LCCN: </label>25490 
<br/><br/><label>Dewey Class. No.: </label>930.1